Master Cylinder Assembly And Brake Booster: Inspection

WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.

Check the inner surface of master cylinder body for rust or pitting.
Check the primary and secondary pistons for rust, scoring, wear or damage.
Check the diaphragm for cracks and wear.